PERFORMANCE OF HIGH STRENGTH RECYCLED AGGREGATE CONCRETE USING METAKAOLIN
Ashish Kapoor
M.Tech Student, Department of Civil Engineering, Punjab Engineering College Chandigarh, India , IN
Abhishek Gupta
M.Tech Student, Department of Civil Engineering, Punjab Engineering College Chandigarh, India , IN
Dr. S.K. Verma
M.Tech Student, Department of Civil Engineering, Punjab Engineering College Chandigarh, India , IN
Keywords: recycled aggregate (RA), recycled fine aggregate (RFA), high strength concrete (HSC), durability, metakaolin, sulphate attack, acid resistance, compressive strength
Abstract
— This present study aims to investigate experimentally the use of recycled aggregates in high strength concrete using metakaolin as a mineral admixture. In this study, the natural fine aggregates were replaced with recycled fine aggregates (RFA) at 10%, 20%, 30%, 40% and 50% while keeping a constant replacement of recycled coarse aggregate (RCA) at 30%. The compressive as well as durability properties like acid resistance and sulphate attack have also been investigated. It was observed that the replacement of sand with RFA up to 10% gave higher strength than the normal control mix (NCM) in terms of compressive strength at later ages. The specimens exposed to sulphate attack also showed a similar trend in terms of compressive strength.
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